More than 1.1 billion years ago, an immense geological fault called the Midcontinent Rift began to form beneath what is now the U.S. Midwest. This massive rift stretches approximately 2,000 kilometers (about 1,900 miles) in a horseshoe shape,…
More than 1.1 billion years ago, an immense geological fault called the Midcontinent Rift began to form beneath what is now the U.S. Midwest. This massive rift stretches approximately 2,000 kilometers (about 1,900 miles) in a horseshoe shape,…